About Rupert Hamer
Sir Rupert James "Dick" Hamer, was an Australian politician who served as the 39th premier of Victoria from 1972 to 1981, and prior to that, the 18th deputy premier of Victoria from 1971 to 1972. He held office as the leader of the Victorian division of the Liberal Party of Australia (LPA) and a member of the Victorian Legislative Assembly (MLA) for the district of Kew. Employing the slogan "Hamer Makes It Happen", he won a landslide against the Labor opposition under Clyde Holding, increasing his party's already large majority. He won an even larger victory in 1976, defeating Holding yet again.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.